Millenium on 30 May 2012
| Week | Halo: Reach | Halo 4 | Net Difference |
| 24 | 15,495/63,709 | 19,651/254,170 | 4,156/190,461 |
| 23 | 10,644/ 74,353 | ||
| 22 | 9,847/84,200 | ||
| 21 | 14,626/98,826 | ||
| 20 | 25,858/124,684 | ||
| 19 | 15,796/140,480 | ||
| 18 | 27,099/167,579 | ||
| 17 | 28,778/196,357 | ||
| 16 | 24,716/221,073 | ||
| 15 | 23,192/244,265 | ||
| 14 | 21,180/265,445 | ||
| 13 | 20,476/285,921 | ||
| 12 | 28,162/314,083 | ||
| 11 | 45,240/359,323 | ||
| 10 | 31,118/390,441 | ||
| 9 | 41,613/432,054 | ||
| 8 | 97,072/529,126 | ||
| 7 | 103,321/632,447 | ||
| 6 | 113,957/746,404 | ||
| 5 | 129,759/876,163 | ||
| 4 | 150,181/1,026,344 | ||
| 3 | 166,818/1,193,162 | ||
| 2 | 190,019/1,383,181 | ||
| 1 | 245,941/1,629,122 |
